go1.16 (#14783)

15 files changed, 488 insertions, 424 deletions

diff --git a/vendor/github.com/go-openapi/spec/.golangci.yml b/vendor/github.com/go-openapi/spec/.golangci.yml
index a5e3239799..835d55e742 100644
--- a/vendor/github.com/go-openapi/spec/.golangci.yml
+++ b/vendor/github.com/go-openapi/spec/.golangci.yml
@@ -37,3 +37,6 @@ linters:
     - godot
     - gofumpt
     - paralleltest
+    - tparallel
+    - thelper
+    - ifshort
diff --git a/vendor/github.com/go-openapi/spec/README.md b/vendor/github.com/go-openapi/spec/README.md
index 8d13b70242..18782c6daf 100644
--- a/vendor/github.com/go-openapi/spec/README.md
+++ b/vendor/github.com/go-openapi/spec/README.md
@@ -1,7 +1,11 @@
-# OAI object model [![Build Status](https://travis-ci.org/go-openapi/spec.svg?branch=master)](https://travis-ci.org/go-openapi/spec) [![codecov](https://codecov.io/gh/go-openapi/spec/branch/master/graph/badge.svg)](https://codecov.io/gh/go-openapi/spec) [![Slack Status](https://slackin.goswagger.io/badge.svg)](https://slackin.goswagger.io)
+# OAI object model
 
+[![Build Status](https://travis-ci.org/go-openapi/spec.svg?branch=master)](https://travis-ci.org/go-openapi/spec)
+<!-- [![Build status](https://ci.appveyor.com/api/projects/status/x377t5o9ennm847o/branch/master?svg=true)](https://ci.appveyor.com/project/casualjim/go-openapi/spec/branch/master) -->
+[![codecov](https://codecov.io/gh/go-openapi/spec/branch/master/graph/badge.svg)](https://codecov.io/gh/go-openapi/spec)
+[![Slack Status](https://slackin.goswagger.io/badge.svg)](https://slackin.goswagger.io)
 [![license](http://img.shields.io/badge/license-Apache%20v2-orange.svg)](https://raw.githubusercontent.com/go-openapi/spec/master/LICENSE)
-[![GoDoc](https://godoc.org/github.com/go-openapi/spec?status.svg)](http://godoc.org/github.com/go-openapi/spec)
+[![Go Reference](https://pkg.go.dev/badge/github.com/go-openapi/spec.svg)](https://pkg.go.dev/github.com/go-openapi/spec)
 [![Go Report Card](https://goreportcard.com/badge/github.com/go-openapi/spec)](https://goreportcard.com/report/github.com/go-openapi/spec)
 
 The object model for OpenAPI specification documents.
@@ -11,7 +15,7 @@ The object model for OpenAPI specification documents.
 * What does this do?
 
 > 1. This package knows how to marshal and unmarshal Swagger API specifications into a golang object model
-> 2. It knows how to resolve $ref and expand them to make a single root documment
+> 2. It knows how to resolve $ref and expand them to make a single root document
 
 * How does it play with the rest of the go-openapi packages ?
 
diff --git a/vendor/github.com/go-openapi/spec/appveyor.yml b/vendor/github.com/go-openapi/spec/appveyor.yml
index e5d28bd1e4..0903593916 100644
--- a/vendor/github.com/go-openapi/spec/appveyor.yml
+++ b/vendor/github.com/go-openapi/spec/appveyor.yml
@@ -14,13 +14,11 @@ build: off
 environment:
   GOPATH: c:\gopath
 
-stack: go 1.12
+stack: go 1.15
 
 test_script:
-  - echo "test disabled for now"
-  #- go test -v -timeout 20m ./...
-#artifacts:
-#  - path: '%GOPATH%\bin\*.exe'
+  - go test -v -timeout 20m ./...
+
 deploy: off
 
 notifications:
diff --git a/vendor/github.com/go-openapi/spec/debug.go b/vendor/github.com/go-openapi/spec/debug.go
index 389c528ff6..fc889f6d0b 100644
--- a/vendor/github.com/go-openapi/spec/debug.go
+++ b/vendor/github.com/go-openapi/spec/debug.go
@@ -18,14 +18,16 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"path/filepath"
+	"path"
 	"runtime"
 )
 
+// Debug is true when the SWAGGER_DEBUG env var is not empty.
+//
+// It enables a more verbose logging of this package.
+var Debug = os.Getenv("SWAGGER_DEBUG") != ""
+
 var (
-	// Debug is true when the SWAGGER_DEBUG env var is not empty.
-	// It enables a more verbose logging of this package.
-	Debug = os.Getenv("SWAGGER_DEBUG") != ""
 	// specLogger is a debug logger for this package
 	specLogger *log.Logger
 )
@@ -42,6 +44,6 @@ func debugLog(msg string, args ...interface{}) {
 	// A private, trivial trace logger, based on go-openapi/spec/expander.go:debugLog()
 	if Debug {
 		_, file1, pos1, _ := runtime.Caller(1)
-		specLogger.Printf("%s:%d: %s", filepath.Base(file1), pos1, fmt.Sprintf(msg, args...))
+		specLogger.Printf("%s:%d: %s", path.Base(file1), pos1, fmt.Sprintf(msg, args...))
 	}
 }
diff --git a/vendor/github.com/go-openapi/spec/errors.go b/vendor/github.com/go-openapi/spec/errors.go
index 10a693a5da..6992c7ba73 100644
--- a/vendor/github.com/go-openapi/spec/errors.go
+++ b/vendor/github.com/go-openapi/spec/errors.go
@@ -2,6 +2,7 @@ package spec
 
 import "errors"
 
+// Error codes
 var (
 	// ErrUnknownTypeForReference indicates that a resolved reference was found in an unsupported container type
 	ErrUnknownTypeForReference = errors.New("unknown type for the resolved reference")
diff --git a/vendor/github.com/go-openapi/spec/expander.go b/vendor/github.com/go-openapi/spec/expander.go
index 8a80e2bb81..d4ea889d44 100644
--- a/vendor/github.com/go-openapi/spec/expander.go
+++ b/vendor/github.com/go-openapi/spec/expander.go
@@ -20,29 +20,46 @@ import (
 )
 
 // ExpandOptions provides options for the spec expander.
+//
+// RelativeBase is the path to the root document. This can be a remote URL or a path to a local file.
+//
+// If left empty, the root document is assumed to be located in the current working directory:
+// all relative $ref's will be resolved from there.
+//
+// PathLoader injects a document loading method. By default, this resolves to the function provided by the SpecLoader package variable.
+//
 type ExpandOptions struct {
-	RelativeBase    string
-	SkipSchemas     bool
-	ContinueOnError bool
-	PathLoader      func(string) (json.RawMessage, error) `json:"-"`
+	RelativeBase        string                                // the path to the root document to expand. This is a file, not a directory
+	SkipSchemas         bool                                  // do not expand schemas, just paths, parameters and responses
+	ContinueOnError     bool                                  // continue expanding even after and error is found
+	PathLoader          func(string) (json.RawMessage, error) `json:"-"` // the document loading method that takes a path as input and yields a json document
+	AbsoluteCircularRef bool                                  // circular $ref remaining after expansion remain absolute URLs
+}
 
-	AbsoluteCircularRef bool
+func optionsOrDefault(opts *ExpandOptions) *ExpandOptions {
+	if opts != nil {
+		clone := *opts // shallow clone to avoid internal changes to be propagated to the caller
+		if clone.RelativeBase != "" {
+			clone.RelativeBase = normalizeBase(clone.RelativeBase)
+		}
+		// if the relative base is empty, let the schema loader choose a pseudo root document
+		return &clone
+	}
+	return &ExpandOptions{}
 }
 
 // ExpandSpec expands the references in a swagger spec
 func ExpandSpec(spec *Swagger, options *ExpandOptions) error {
+	options = optionsOrDefault(options)
 	resolver := defaultSchemaLoader(spec, options, nil, nil)
 
-	// getting the base path of the spec to adjust all subsequent reference resolutions
-	specBasePath := ""
-	if options != nil && options.RelativeBase != "" {
-		specBasePath, _ = absPath(options.RelativeBase)
-	}
+	specBasePath := options.RelativeBase
 
-	if options == nil || !options.SkipSchemas {
+	if !options.SkipSchemas {
 		for key, definition := range spec.Definitions {
 			parentRefs := make([]string, 0, 10)
 			parentRefs = append(parentRefs, fmt.Sprintf("#/definitions/%s", key))
+
 			def, err := expandSchema(definition, parentRefs, resolver, specBasePath)
 			if resolver.shouldStopOnError(err) {
 				return err
@@ -94,8 +111,7 @@ func baseForRoot(root interface{}, cache ResolutionCache) string {
 	}
 
 	// cache the root document to resolve $ref's
-	base, _ := absPath(rootBase)
-	normalizedBase := normalizeAbsPath(base)
+	normalizedBase := normalizeBase(rootBase)
 	cache.Set(normalizedBase, root)
 
 	return normalizedBase
@@ -135,15 +151,12 @@ func ExpandSchemaWithBasePath(schema *Schema, cache ResolutionCache, opts *Expan
 
 	cache = cacheOrDefault(cache)
 
-	var basePath string
-	if opts.RelativeBase != "" {
-		basePath, _ = absPath(opts.RelativeBase)
-	}
+	opts = optionsOrDefault(opts)
 
 	resolver := defaultSchemaLoader(nil, opts, cache, nil)
 
 	parentRefs := make([]string, 0, 10)
-	s, err := expandSchema(*schema, parentRefs, resolver, basePath)
+	s, err := expandSchema(*schema, parentRefs, resolver, opts.RelativeBase)
 	if err != nil {
 		return err
 	}
@@ -183,7 +196,7 @@ func expandItems(target Schema, parentRefs []string, resolver *schemaLoader, bas
 
 func expandSchema(target Schema, parentRefs []string, resolver *schemaLoader, basePath string) (*Schema, error) {
 	if target.Ref.String() == "" && target.Ref.IsRoot() {
-		newRef := normalizeFileRef(&target.Ref, basePath)
+		newRef := normalizeRef(&target.Ref, basePath)
 		target.Ref = *newRef
 		return &target, nil
 	}
@@ -315,7 +328,7 @@ func expandSchemaRef(target Schema, parentRefs []string, resolver *schemaLoader,
 	// Ref also changes the resolution scope of children expandSchema
 
 	// here the resolution scope is changed because a $ref was encountered
-	normalizedRef := normalizeFileRef(&target.Ref, basePath)
+	normalizedRef := normalizeRef(&target.Ref, basePath)
 	normalizedBasePath := normalizedRef.RemoteURI()
 
 	if resolver.isCircular(normalizedRef, basePath, parentRefs...) {
@@ -325,7 +338,7 @@ func expandSchemaRef(target Schema, parentRefs []string, resolver *schemaLoader,
 		debugLog("short circuit circular ref: basePath: %s, normalizedPath: %s, normalized ref: %s",
 			basePath, normalizedBasePath, normalizedRef.String())
 		if !resolver.options.AbsoluteCircularRef {
-			target.Ref = *denormalizeFileRef(normalizedRef, normalizedBasePath, resolver.context.basePath)
+			target.Ref = denormalizeRef(normalizedRef, resolver.context.basePath, resolver.context.rootID)
 		} else {
 			target.Ref = *normalizedRef
 		}
@@ -434,9 +447,7 @@ func expandOperation(op *Operation, resolver *schemaLoader, basePath string) err
 func ExpandResponseWithRoot(response *Response, root interface{}, cache ResolutionCache) error {
 	cache = cacheOrDefault(cache)
 	opts := &ExpandOptions{
-		RelativeBase:    baseForRoot(root, cache),
-		SkipSchemas:     false,
-		ContinueOnError: false,
+		RelativeBase: baseForRoot(root, cache),
 	}
 	resolver := defaultSchemaLoader(root, opts, cache, nil)
 
@@ -447,13 +458,9 @@ func ExpandResponseWithRoot(response *Response, root interface{}, cache Resoluti
 //
 // All refs inside response will be resolved relative to basePath
 func ExpandResponse(response *Response, basePath string) error {
-	var specBasePath string
-	if basePath != "" {
-		specBasePath, _ = absPath(basePath)
-	}
-	opts := &ExpandOptions{
-		RelativeBase: specBasePath,
-	}
+	opts := optionsOrDefault(&ExpandOptions{
+		RelativeBase: basePath,
+	})
 	resolver := defaultSchemaLoader(nil, opts, nil, nil)
 
 	return expandParameterOrResponse(response, resolver, opts.RelativeBase)
@@ -465,10 +472,9 @@ func ExpandResponse(response *Response, basePath string) error {
 // (use ExpandParameter to resolve external references).
 func ExpandParameterWithRoot(parameter *Parameter, root interface{}, cache ResolutionCache) error {
 	cache = cacheOrDefault(cache)
+
 	opts := &ExpandOptions{
-		RelativeBase:    baseForRoot(root, cache),
-		SkipSchemas:     false,
-		ContinueOnError: false,
+		RelativeBase: baseForRoot(root, cache),
 	}
 	resolver := defaultSchemaLoader(root, opts, cache, nil)
 
@@ -479,13 +485,9 @@ func ExpandParameterWithRoot(parameter *Parameter, root interface{}, cache Resol
 // This is the exported version of expandParameter
 // all refs inside parameter will be resolved relative to basePath
 func ExpandParameter(parameter *Parameter, basePath string) error {
-	var specBasePath string
-	if basePath != "" {
-		specBasePath, _ = absPath(basePath)
-	}
-	opts := &ExpandOptions{
-		RelativeBase: specBasePath,
-	}
+	opts := optionsOrDefault(&ExpandOptions{
+		RelativeBase: basePath,
+	})
 	resolver := defaultSchemaLoader(nil, opts, nil, nil)
 
 	return expandParameterOrResponse(parameter, resolver, opts.RelativeBase)
@@ -548,7 +550,7 @@ func expandParameterOrResponse(input interface{}, resolver *schemaLoader, basePa
 	}
 
 	if sch.Ref.String() != "" {
-		rebasedRef, ern := NewRef(normalizePaths(sch.Ref.String(), basePath))
+		rebasedRef, ern := NewRef(normalizeURI(sch.Ref.String(), basePath))
 		if ern != nil {
 			return ern
 		}
@@ -557,16 +559,17 @@ func expandParameterOrResponse(input interface{}, resolver *schemaLoader, basePa
 		case resolver.isCircular(&rebasedRef, basePath, parentRefs...):
 			// this is a circular $ref: stop expansion
 			if !resolver.options.AbsoluteCircularRef {
-				sch.Ref = *denormalizeFileRef(&rebasedRef, basePath, resolver.context.basePath)
+				sch.Ref = denormalizeRef(&rebasedRef, resolver.context.basePath, resolver.context.rootID)
 			} else {
 				sch.Ref = rebasedRef
 			}
 		case !resolver.options.SkipSchemas:
 			// schema expanded to a $ref in another root
 			sch.Ref = rebasedRef
+			debugLog("rebased to: %s", sch.Ref.String())
 		default:
 			// skip schema expansion but rebase $ref to schema
-			sch.Ref = *denormalizeFileRef(&rebasedRef, basePath, resolver.context.basePath)
+			sch.Ref = denormalizeRef(&rebasedRef, resolver.context.basePath, resolver.context.rootID)
 		}
 	}
 
diff --git a/vendor/github.com/go-openapi/spec/go.mod b/vendor/github.com/go-openapi/spec/go.mod
index 1717d0836c..63d9e82e99 100644
--- a/vendor/github.com/go-openapi/spec/go.mod
+++ b/vendor/github.com/go-openapi/spec/go.mod
@@ -3,10 +3,10 @@ module github.com/go-openapi/spec
 require (
 	github.com/go-openapi/jsonpointer v0.19.5
 	github.com/go-openapi/jsonreference v0.19.5
-	github.com/go-openapi/swag v0.19.12
+	github.com/go-openapi/swag v0.19.14
 	github.com/stretchr/testify v1.6.1
-	golang.org/x/net v0.0.0-20201224014010-6772e930b67b // indirect
-	golang.org/x/text v0.3.4 // indirect
+	golang.org/x/net v0.0.0-20210119194325-5f4716e94777 // indirect
+	golang.org/x/text v0.3.5 // indirect
 	gopkg.in/yaml.v2 v2.4.0
 )
 
diff --git a/vendor/github.com/go-openapi/spec/go.sum b/vendor/github.com/go-openapi/spec/go.sum
index 730dddba7e..9e86ed981a 100644
--- a/vendor/github.com/go-openapi/spec/go.sum
+++ b/vendor/github.com/go-openapi/spec/go.sum
@@ -12,20 +12,17 @@ github.com/go-openapi/jsonpointer v0.19.5 h1:gZr+CIYByUqjcgeLXnQu2gHYQC9o73G2XUe
 github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
 github.com/go-openapi/jsonreference v0.19.5 h1:1WJP/wi4OjB4iV8KVbH73rQaoialJrqv8gitZLxGLtM=
 github.com/go-openapi/jsonreference v0.19.5/go.mod h1:RdybgQwPxbL4UEjuAruzK1x3nE69AqPYEJeo/TWfEeg=
-github.com/go-openapi/swag v0.19.5 h1:lTz6Ys4CmqqCQmZPBlbQENR1/GucA2bzYTE12Pw4tFY=
 github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
-github.com/go-openapi/swag v0.19.12 h1:Bc0bnY2c3AoF7Gc+IMIAQQsD8fLHjHpc19wXvYuayQI=
-github.com/go-openapi/swag v0.19.12/go.mod h1:eFdyEBkTdoAf/9RXBvj4cr1nH7GD8Kzo5HTt47gr72M=
+github.com/go-openapi/swag v0.19.14 h1:gm3vOOXfiuw5i9p5N9xJvfjvuofpyvLA9Wr6QfK5Fng=
+github.com/go-openapi/swag v0.19.14/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63 h1:nTT4s92Dgz2HlrB2NaMgvlfqHH39OgMhA7z3PK7PGD4=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e h1:hB2xlXdHp/pmPZq0y3QnmWAArdw9PqbmotexnWx/FU8=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
@@ -43,8 +40,8 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 h1:k7pJ2yAPLPgbskkFdhRCsA77k2fySZ1zf2zCjvQCiIM=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20201224014010-6772e930b67b h1:iFwSg7t5GZmB/Q5TjiEAsdoLDrdJRC1RiF2WhuV29Qw=
-golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210119194325-5f4716e94777 h1:003p0dJM77cxMSyCPFphvZf/Y5/NXf5fzg6ufd1/Oew=
+golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
@@ -52,18 +49,14 @@ golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.4 h1:0YWbFKbhXG/wIiuHDSKpS0Iy7FSA+u45VtBMfQcFTTc=
-golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
diff --git a/vendor/github.com/go-openapi/spec/normalizer.go b/vendor/github.com/go-openapi/spec/normalizer.go
index e9010a7d03..d6c4839712 100644
--- a/vendor/github.com/go-openapi/spec/normalizer.go
+++ b/vendor/github.com/go-openapi/spec/normalizer.go
@@ -15,163 +15,189 @@
 package spec
 
 import (
-	"fmt"
 	"net/url"
-	"os"
 	"path"
-	"path/filepath"
-	"runtime"
 	"strings"
 )
 
-const windowsOS = "windows"
+const fileScheme = "file"
 
-// normalize absolute path for cache.
-// on Windows, drive letters should be converted to lower as scheme in net/url.URL
-func normalizeAbsPath(path string) string {
-	u, err := url.Parse(path)
+// normalizeURI ensures that all $ref paths used internally by the expander are canonicalized.
+//
+// NOTE(windows): there is a tolerance over the strict URI format on windows.
+//
+// The normalizer accepts relative file URLs like 'Path\File.JSON' as well as absolute file URLs like
+// 'C:\Path\file.Yaml'.
+//
+// Both are canonicalized with a "file://" scheme, slashes and a lower-cased path:
+// 'file:///c:/path/file.yaml'
+//
+// URLs can be specified with a file scheme, like in 'file:///folder/file.json' or
+// 'file:///c:\folder\File.json'.
+//
+// URLs like file://C:\folder are considered invalid (i.e. there is no host 'c:\folder') and a "repair"
+// is attempted.
+//
+// The base path argument is assumed to be canonicalized (e.g. using normalizeBase()).
+func normalizeURI(refPath, base string) string {
+	refURL, err := url.Parse(refPath)
 	if err != nil {
-		debugLog("normalize absolute path failed: %s", err)
-		return path
+		specLogger.Printf("warning: invalid URI in $ref  %q: %v", refPath, err)
+		refURL, refPath = repairURI(refPath)
 	}
-	return u.String()
-}
 
-// base or refPath could be a file path or a URL
-// given a base absolute path and a ref path, return the absolute path of refPath
-// 1) if refPath is absolute, return it
-// 2) if refPath is relative, join it with basePath keeping the scheme, hosts, and ports if exists
-// base could be a directory or a full file path
-func normalizePaths(refPath, base string) string {
-	refURL, _ := url.Parse(refPath)
-	if path.IsAbs(refURL.Path) || filepath.IsAbs(refPath) {
-		// refPath is actually absolute
-		if refURL.Host != "" {
-			return refPath
-		}
-		parts := strings.Split(refPath, "#")
-		result := filepath.FromSlash(parts[0])
-		if len(parts) == 2 {
-			result += "#" + parts[1]
-		}
-		return result
+	fixWindowsURI(refURL, refPath) // noop on non-windows OS
+
+	refURL.Path = path.Clean(refURL.Path)
+	if refURL.Path == "." {
+		refURL.Path = ""
 	}
 
-	// relative refPath
-	baseURL, _ := url.Parse(base)
-	if !strings.HasPrefix(refPath, "#") {
-		// combining paths
-		if baseURL.Host != "" {
-			baseURL.Path = path.Join(path.Dir(baseURL.Path), refURL.Path)
-		} else { // base is a file
-			newBase := fmt.Sprintf("%s#%s", filepath.Join(filepath.Dir(base), filepath.FromSlash(refURL.Path)), refURL.Fragment)
-			return newBase
-		}
+	r := MustCreateRef(refURL.String())
+	if r.IsCanonical() {
+		return refURL.String()
+	}
 
+	baseURL, _ := url.Parse(base)
+	if path.IsAbs(refURL.Path) {
+		baseURL.Path = refURL.Path
+	} else if refURL.Path != "" {
+		baseURL.Path = path.Join(path.Dir(baseURL.Path), refURL.Path)
 	}
 	// copying fragment from ref to base
 	baseURL.Fragment = refURL.Fragment
+
 	return baseURL.String()
 }
 
-// isRoot is a temporary hack to discern windows file ref for ref.IsRoot().
-// TODO: a more thorough change is needed to handle windows file refs.
-func isRoot(ref *Ref) bool {
-	if runtime.GOOS != windowsOS {
-		return ref.IsRoot()
-	}
-	return !filepath.IsAbs(ref.String())
-}
+// denormalizeRef returns the simplest notation for a normalized $ref, given the path of the original root document.
+//
+// When calling this, we assume that:
+// * $ref is a canonical URI
+// * originalRelativeBase is a canonical URI
+//
+// denormalizeRef is currently used when we rewrite a $ref after a circular $ref has been detected.
+// In this case, expansion stops and normally renders the internal canonical $ref.
+//
+// This internal $ref is eventually rebased to the original RelativeBase used for the expansion.
+//
+// There is a special case for schemas that are anchored with an "id":
+// in that case, the rebasing is performed // against the id only if this is an anchor for the initial root document.
+// All other intermediate "id"'s found along the way are ignored for the purpose of rebasing.
+//
+func denormalizeRef(ref *Ref, originalRelativeBase, id string) Ref {
+	debugLog("denormalizeRef called:\n$ref: %q\noriginal: %s\nroot ID:%s", ref.String(), originalRelativeBase, id)
 
-// isAbs is a temporary hack to discern windows file ref for url IsAbs().
-// TODO: a more thorough change is needed to handle windows file refs.
-func isAbs(u *url.URL) bool {
-	if runtime.GOOS != windowsOS {
-		return u.IsAbs()
+	if ref.String() == "" || ref.IsRoot() || ref.HasFragmentOnly {
+		// short circuit: $ref to current doc
+		return *ref
 	}
-	if len(u.Scheme) <= 1 {
-		// drive letter got caught as URI scheme
-		return false
+
+	if id != "" {
+		idBaseURL, err := url.Parse(id)
+		if err == nil { // if the schema id is not usable as a URI, ignore it
+			if ref, ok := rebase(ref, idBaseURL, true); ok { // rebase, but keep references to root unchaged (do not want $ref: "")
+				// $ref relative to the ID of the schema in the root document
+				return ref
+			}
+		}
 	}
-	return u.IsAbs()
+
+	originalRelativeBaseURL, _ := url.Parse(originalRelativeBase)
+
+	r, _ := rebase(ref, originalRelativeBaseURL, false)
+
+	return r
 }
 
-// denormalizePaths returns to simplest notation on file $ref,
-// i.e. strips the absolute path and sets a path relative to the base path.
-//
-// This is currently used when we rewrite ref after a circular ref has been detected
-func denormalizeFileRef(ref *Ref, relativeBase, originalRelativeBase string) *Ref {
-	debugLog("denormalizeFileRef for: %s (relative: %s, original: %s)", ref.String(),
-		relativeBase, originalRelativeBase)
+func rebase(ref *Ref, v *url.URL, notEqual bool) (Ref, bool) {
+	var newBase url.URL
 
-	// log.Printf("denormalize: %s, IsRoot: %t,HasFragmentOnly: %t, HasFullURL: %t", ref.String(), ref.IsRoot(), ref.HasFragmentOnly, ref.HasFullURL)
-	if ref.String() == "" || isRoot(ref) || ref.HasFragmentOnly {
-		return ref
-	}
-	// strip relativeBase from URI
-	relativeBaseURL, _ := url.Parse(relativeBase)
-	relativeBaseURL.Fragment = ""
-
-	if isAbs(relativeBaseURL) && strings.HasPrefix(ref.String(), relativeBase) {
-		// this should work for absolute URI (e.g. http://...): we have an exact match, just trim prefix
-		r, _ := NewRef(strings.TrimPrefix(ref.String(), relativeBase))
-		return &r
+	u := ref.GetURL()
+
+	if u.Scheme != v.Scheme || u.Host != v.Host {
+		return *ref, false
 	}
 
-	if isAbs(relativeBaseURL) {
-		// other absolute URL get unchanged (i.e. with a non-empty scheme)
-		return ref
+	docPath := v.Path
+	v.Path = path.Dir(v.Path)
+
+	if v.Path == "." {
+		v.Path = ""
+	} else if !strings.HasSuffix(v.Path, "/") {
+		v.Path += "/"
 	}
 
-	// for relative file URIs:
-	originalRelativeBaseURL, _ := url.Parse(originalRelativeBase)
-	originalRelativeBaseURL.Fragment = ""
-	if strings.HasPrefix(ref.String(), originalRelativeBaseURL.String()) {
-		// the resulting ref is in the expanded spec: return a local ref
-		r, _ := NewRef(strings.TrimPrefix(ref.String(), originalRelativeBaseURL.String()))
-		return &r
+	newBase.Fragment = u.Fragment
+
+	if strings.HasPrefix(u.Path, docPath) {
+		newBase.Path = strings.TrimPrefix(u.Path, docPath)
+	} else {
+		newBase.Path = strings.TrimPrefix(u.Path, v.Path)
 	}
 
-	// check if we may set a relative path, considering the original base path for this spec.
-	// Example:
-	//   spec is located at /mypath/spec.json
-	//   my normalized ref points to: /mypath/item.json#/target
-	//   expected result: item.json#/target
-	parts := strings.Split(ref.String(), "#")
-	relativePath, err := filepath.Rel(filepath.Dir(originalRelativeBaseURL.String()), parts[0])
-	if err != nil {
-		// there is no common ancestor (e.g. different drives on windows)
-		// leaves the ref unchanged
-		return ref
+	if notEqual && newBase.Path == "" && newBase.Fragment == "" {
+		// do not want rebasing to end up in an empty $ref
+		return *ref, false
 	}
-	if len(parts) == 2 {
-		relativePath += "#" + parts[1]
+
+	if path.IsAbs(newBase.Path) {
+		// whenever we end up with an absolute path, specify the scheme and host
+		newBase.Scheme = v.Scheme
+		newBase.Host = v.Host
 	}
-	r, _ := NewRef(relativePath)
+
+	return MustCreateRef(newBase.String()), true
+}
+
+// normalizeRef canonicalize a Ref, using a canonical relativeBase as its absolute anchor
+func normalizeRef(ref *Ref, relativeBase string) *Ref {
+	r := MustCreateRef(normalizeURI(ref.String(), relativeBase))
 	return &r
 }
 
-// relativeBase could be an ABSOLUTE file path or an ABSOLUTE URL
-func normalizeFileRef(ref *Ref, relativeBase string) *Ref {
-	// This is important for when the reference is pointing to the root schema
-	if ref.String() == "" {
-		r, _ := NewRef(relativeBase)
-		return &r
+// normalizeBase performs a normalization of the input base path.
+//
+// This always yields a canonical URI (absolute), usable for the document cache.
+//
+// It ensures that all further internal work on basePath may safely assume
+// a non-empty, cross-platform, canonical URI (i.e. absolute).
+//
+// This normalization tolerates windows paths (e.g. C:\x\y\File.dat) and transform this
+// in a file:// URL with lower cased drive letter and path.
+//
+// See also: https://en.wikipedia.org/wiki/File_URI_scheme
+func normalizeBase(in string) string {
+	u, err := url.Parse(in)
+	if err != nil {
+		specLogger.Printf("warning: invalid URI in RelativeBase  %q: %v", in, err)
+		u, in = repairURI(in)
 	}
 
-	s := normalizePaths(ref.String(), relativeBase)
-	r, _ := NewRef(s)
-	return &r
-}
+	u.Fragment = "" // any fragment in the base is irrelevant
 
-// absPath returns the absolute path of a file
-func absPath(fname string) (string, error) {
-	if strings.HasPrefix(fname, "http") {
-		return fname, nil
+	fixWindowsURI(u, in) // noop on non-windows OS
+
+	u.Path = path.Clean(u.Path)
+	if u.Path == "." { // empty after Clean()
+		u.Path = ""
 	}
-	if filepath.IsAbs(fname) {
-		return fname, nil
+
+	if u.Scheme != "" {
+		if path.IsAbs(u.Path) || u.Scheme != fileScheme {
+			// this is absolute or explicitly not a local file: we're good
+			return u.String()
+		}
 	}
-	wd, err := os.Getwd()
-	return normalizeAbsPath(filepath.Join(wd, fname)), err
+
+	// no scheme or file scheme with relative path: assume file and make it absolute
+	// enforce scheme file://... with absolute path.
+	//
+	// If the input path is relative, we anchor the path to the current working directory.
+	// NOTE: we may end up with a host component. Leave it unchanged: e.g. file://host/folder/file.json
+
+	u.Scheme = fileScheme
+	u.Path = absPath(u.Path) // platform-dependent
+	u.RawQuery = ""          // any query component is irrelevant for a base
+	return u.String()
 }
diff --git a/vendor/github.com/go-openapi/spec/normalizer_nonwindows.go b/vendor/github.com/go-openapi/spec/normalizer_nonwindows.go
new file mode 100644
index 0000000000..c8a0645347
--- /dev/null
+++ b/vendor/github.com/go-openapi/spec/normalizer_nonwindows.go
@@ -0,0 +1,43 @@
+// +build !windows
+
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package spec
+
+import (
+	"net/url"
+	"path/filepath"
+)
+
+// absPath makes a file path absolute and compatible with a URI path component.
+//
+// The parameter must be a path, not an URI.
+func absPath(in string) string {
+	anchored, err := filepath.Abs(in)
+	if err != nil {
+		specLogger.Printf("warning: could not resolve current working directory: %v", err)
+		return in
+	}
+	return anchored
+}
+
+func repairURI(in string) (*url.URL, string) {
+	u, _ := url.Parse("")
+	debugLog("repaired URI: original: %q, repaired: %q", in, "")
+	return u, ""
+}
+
+func fixWindowsURI(u *url.URL, in string) {
+}
diff --git a/vendor/github.com/go-openapi/spec/normalizer_windows.go b/vendor/github.com/go-openapi/spec/normalizer_windows.go
new file mode 100644
index 0000000000..fe2d1ecd43
--- /dev/null
+++ b/vendor/github.com/go-openapi/spec/normalizer_windows.go
@@ -0,0 +1,154 @@
+// -build windows
+
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package spec
+
+import (
+	"net/url"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+// absPath makes a file path absolute and compatible with a URI path component
+//
+// The parameter must be a path, not an URI.
+func absPath(in string) string {
+	// NOTE(windows): filepath.Abs exhibits a special behavior on windows for empty paths.
+	// See https://github.com/golang/go/issues/24441
+	if in == "" {
+		in = "."
+	}
+
+	anchored, err := filepath.Abs(in)
+	if err != nil {
+		specLogger.Printf("warning: could not resolve current working directory: %v", err)
+		return in
+	}
+
+	pth := strings.ReplaceAll(strings.ToLower(anchored), `\`, `/`)
+	if !strings.HasPrefix(pth, "/") {
+		pth = "/" + pth
+	}
+
+	return path.Clean(pth)
+}
+
+// repairURI tolerates invalid file URIs with common typos
+// such as 'file://E:\folder\file', that break the regular URL parser.
+//
+// Adopting the same defaults as for unixes (e.g. return an empty path) would
+// result into a counter-intuitive result for that case (e.g. E:\folder\file is
+// eventually resolved as the current directory). The repair will detect the missing "/".
+//
+// Note that this only works for the file scheme.
+func repairURI(in string) (*url.URL, string) {
+	const prefix = fileScheme + "://"
+	if !strings.HasPrefix(in, prefix) {
+		// giving up: resolve to empty path
+		u, _ := url.Parse("")
+
+		return u, ""
+	}
+
+	// attempt the repair, stripping the scheme should be sufficient
+	u, _ := url.Parse(strings.TrimPrefix(in, prefix))
+	debugLog("repaired URI: original: %q, repaired: %q", in, u.String())
+
+	return u, u.String()
+}
+
+// fixWindowsURI tolerates an absolute file path on windows such as C:\Base\File.yaml or \\host\share\Base\File.yaml
+// and makes it a canonical URI: file:///c:/base/file.yaml
+//
+// Catch 22 notes for Windows:
+//
+// * There may be a drive letter on windows (it is lower-cased)
+// * There may be a share UNC, e.g. \\server\folder\data.xml
+// * Paths are case insensitive
+// * Paths may already contain slashes
+// * Paths must be slashed
+//
+// NOTE: there is no escaping. "/" may be valid separators just like "\".
+// We don't use ToSlash() (which escapes everything) because windows now also
+// tolerates the use of "/". Hence, both C:\File.yaml and C:/File.yaml will work.
+func fixWindowsURI(u *url.URL, in string) {
+	drive := filepath.VolumeName(in)
+
+	if len(drive) > 0 {
+		if len(u.Scheme) == 1 && strings.EqualFold(u.Scheme, drive[:1]) { // a path with a drive letter
+			u.Scheme = fileScheme
+			u.Host = ""
+			u.Path = strings.Join([]string{drive, u.Opaque, u.Path}, `/`) // reconstruct the full path component (no fragment, no query)
+		} else if u.Host == "" && strings.HasPrefix(u.Path, drive) { // a path with a \\host volume
+			// NOTE: the special host@port syntax for UNC is not supported (yet)
+			u.Scheme = fileScheme
+
+			// this is a modified version of filepath.Dir() to apply on the VolumeName itself
+			i := len(drive) - 1
+			for i >= 0 && !os.IsPathSeparator(drive[i]) {
+				i--
+			}
+			host := drive[:i] // \\host\share => host
+
+			u.Path = strings.TrimPrefix(u.Path, host)
+			u.Host = strings.TrimPrefix(host, `\\`)
+		}
+
+		u.Opaque = ""
+		u.Path = strings.ReplaceAll(strings.ToLower(u.Path), `\`, `/`)
+
+		// ensure we form an absolute path
+		if !strings.HasPrefix(u.Path, "/") {
+			u.Path = "/" + u.Path
+		}
+
+		u.Path = path.Clean(u.Path)
+
+		return
+	}
+
+	if u.Scheme == fileScheme {
+		// Handle dodgy cases for file://{...} URIs on windows.
+		// A canonical URI should always be followed by an absolute path.
+		//
+		// Examples:
+		//   * file:///folder/file => valid, unchanged
+		//   * file:///c:\folder\file => slashed
+		//   * file:///./folder/file => valid, cleaned to remove the dot
+		//   * file:///.\folder\file => remapped to cwd
+		//   * file:///. => dodgy, remapped to / (consistent with the behavior on unix)
+		//   * file:///.. => dodgy, remapped to / (consistent with the behavior on unix)
+		if (!path.IsAbs(u.Path) && !filepath.IsAbs(u.Path)) || (strings.HasPrefix(u.Path, `/.`) && strings.Contains(u.Path, `\`)) {
+			// ensure we form an absolute path
+			u.Path, _ = filepath.Abs(strings.TrimLeft(u.Path, `/`))
+			if !strings.HasPrefix(u.Path, "/") {
+				u.Path = "/" + u.Path
+			}
+		}
+		u.Path = strings.ToLower(u.Path)
+	}
+
+	// NOTE: lower case normalization does not propagate to inner resources,
+	// generated when rebasing: when joining a relative URI with a file to an absolute base,
+	// only the base is currently lower-cased.
+	//
+	// For now, we assume this is good enough for most use cases
+	// and try not to generate too many differences
+	// between the output produced on different platforms.
+	u.Path = path.Clean(strings.ReplaceAll(u.Path, `\`, `/`))
+}
diff --git a/vendor/github.com/go-openapi/spec/resolver.go b/vendor/github.com/go-openapi/spec/resolver.go
index 177292ad23..47d1ee13fc 100644
--- a/vendor/github.com/go-openapi/spec/resolver.go
+++ b/vendor/github.com/go-openapi/spec/resolver.go
@@ -1,18 +1,16 @@
 package spec
 
 import (
+	"fmt"
+
 	"github.com/go-openapi/swag"
 )
 
 func resolveAnyWithBase(root interface{}, ref *Ref, result interface{}, options *ExpandOptions) error {
+	options = optionsOrDefault(options)
 	resolver := defaultSchemaLoader(root, options, nil, nil)
 
-	basePath := ""
-	if options != nil && options.RelativeBase != "" {
-		basePath, _ = absPath(options.RelativeBase)
-	}
-
-	if err := resolver.Resolve(ref, result, basePath); err != nil {
+	if err := resolver.Resolve(ref, result, options.RelativeBase); err != nil {
 		return err
 	}
 
@@ -22,8 +20,8 @@ func resolveAnyWithBase(root interface{}, ref *Ref, result interface{}, options
 // ResolveRefWithBase resolves a reference against a context root with preservation of base path
 func ResolveRefWithBase(root interface{}, ref *Ref, options *ExpandOptions) (*Schema, error) {
 	result := new(Schema)
-	err := resolveAnyWithBase(root, ref, result, options)
-	if err != nil {
+
+	if err := resolveAnyWithBase(root, ref, result, options); err != nil {
 		return nil, err
 	}
 
@@ -52,15 +50,15 @@ func ResolveRef(root interface{}, ref *Ref) (*Schema, error) {
 		}
 		return newSch, nil
 	default:
-		return nil, ErrUnknownTypeForReference
+		return nil, fmt.Errorf("type: %T: %w", sch, ErrUnknownTypeForReference)
 	}
 }
 
 // ResolveParameterWithBase resolves a parameter reference against a context root and base path
 func ResolveParameterWithBase(root interface{}, ref Ref, options *ExpandOptions) (*Parameter, error) {
 	result := new(Parameter)
-	err := resolveAnyWithBase(root, &ref, result, options)
-	if err != nil {
+
+	if err := resolveAnyWithBase(root, &ref, result, options); err != nil {
 		return nil, err
 	}
 
@@ -75,6 +73,7 @@ func ResolveParameter(root interface{}, ref Ref) (*Parameter, error) {
 // ResolveResponseWithBase resolves response a reference against a context root and base path
 func ResolveResponseWithBase(root interface{}, ref Ref, options *ExpandOptions) (*Response, error) {
 	result := new(Response)
+
 	err := resolveAnyWithBase(root, &ref, result, options)
 	if err != nil {
 		return nil, err
@@ -91,8 +90,8 @@ func ResolveResponse(root interface{}, ref Ref) (*Response, error) {
 // ResolvePathItemWithBase resolves response a path item against a context root and base path
 func ResolvePathItemWithBase(root interface{}, ref Ref, options *ExpandOptions) (*PathItem, error) {
 	result := new(PathItem)
-	err := resolveAnyWithBase(root, &ref, result, options)
-	if err != nil {
+
+	if err := resolveAnyWithBase(root, &ref, result, options); err != nil {
 		return nil, err
 	}
 
@@ -112,8 +111,8 @@ func ResolvePathItem(root interface{}, ref Ref, options *ExpandOptions) (*PathIt
 // Similarly, $ref are forbidden in response headers.
 func ResolveItemsWithBase(root interface{}, ref Ref, options *ExpandOptions) (*Items, error) {
 	result := new(Items)
-	err := resolveAnyWithBase(root, &ref, result, options)
-	if err != nil {
+
+	if err := resolveAnyWithBase(root, &ref, result, options); err != nil {
 		return nil, err
 	}
 
diff --git a/vendor/github.com/go-openapi/spec/schema_loader.go b/vendor/github.com/go-openapi/spec/schema_loader.go
index 9ea78b5d52..0059b99aed 100644
--- a/vendor/github.com/go-openapi/spec/schema_loader.go
+++ b/vendor/github.com/go-openapi/spec/schema_loader.go
@@ -33,16 +33,12 @@ import (
 // NOTE: if you are using the go-openapi/loads package, it will override
 // this value with its own default (a loader to retrieve YAML documents as
 // well as JSON ones).
-var PathLoader func(string) (json.RawMessage, error)
-
-func init() {
-	PathLoader = func(path string) (json.RawMessage, error) {
-		data, err := swag.LoadFromFileOrHTTP(path)
-		if err != nil {
-			return nil, err
-		}
-		return json.RawMessage(data), nil
+var PathLoader = func(pth string) (json.RawMessage, error) {
+	data, err := swag.LoadFromFileOrHTTP(pth)
+	if err != nil {
+		return nil, err
 	}
+	return json.RawMessage(data), nil
 }
 
 // resolverContext allows to share a context during spec processing.
@@ -55,12 +51,13 @@ type resolverContext struct {
 	circulars map[string]bool
 	basePath  string
 	loadDoc   func(string) (json.RawMessage, error)
+	rootID    string
 }
 
-func newResolverContext(expandOptions *ExpandOptions) *resolverContext {
-	absBase, _ := absPath(expandOptions.RelativeBase)
+func newResolverContext(options *ExpandOptions) *resolverContext {
+	expandOptions := optionsOrDefault(options)
 
-	// path loader may be overridden from option
+	// path loader may be overridden by options
 	var loader func(string) (json.RawMessage, error)
 	if expandOptions.PathLoader == nil {
 		loader = PathLoader
@@ -70,7 +67,7 @@ func newResolverContext(expandOptions *ExpandOptions) *resolverContext {
 
 	return &resolverContext{
 		circulars: make(map[string]bool),
-		basePath:  absBase, // keep the root base path in context
+		basePath:  expandOptions.RelativeBase, // keep the root base path in context
 		loadDoc:   loader,
 	}
 }
@@ -88,7 +85,7 @@ func (r *schemaLoader) transitiveResolver(basePath string, ref Ref) *schemaLoade
 	}
 
 	baseRef := MustCreateRef(basePath)
-	currentRef := normalizeFileRef(&ref, basePath)
+	currentRef := normalizeRef(&ref, basePath)
 	if strings.HasPrefix(currentRef.String(), baseRef.String()) {
 		return r
 	}
@@ -102,15 +99,17 @@ func (r *schemaLoader) transitiveResolver(basePath string, ref Ref) *schemaLoade
 	// traversing multiple documents
 	newOptions := r.options
 	newOptions.RelativeBase = rootURL.String()
+
 	return defaultSchemaLoader(root, newOptions, r.cache, r.context)
 }
 
 func (r *schemaLoader) updateBasePath(transitive *schemaLoader, basePath string) string {
 	if transitive != r {
 		if transitive.options != nil && transitive.options.RelativeBase != "" {
-			basePath, _ = absPath(transitive.options.RelativeBase)
+			return normalizeBase(transitive.options.RelativeBase)
 		}
 	}
+
 	return basePath
 }
 
@@ -142,7 +141,7 @@ func (r *schemaLoader) resolveRef(ref *Ref, target interface{}, basePath string)
 	if (ref.IsRoot() || ref.HasFragmentOnly) && root != nil {
 		data = root
 	} else {
-		baseRef := normalizeFileRef(ref, basePath)
+		baseRef := normalizeRef(ref, basePath)
 		data, _, _, err = r.load(baseRef.GetURL())
 		if err != nil {
 			return err
@@ -166,43 +165,39 @@ func (r *schemaLoader) load(refURL *url.URL) (interface{}, url.URL, bool, error)
 
 	var err error
 	pth := toFetch.String()
-	if pth == rootBase {
-		pth, err = absPath(rootBase)
-		if err != nil {
-			return nil, url.URL{}, false, err
-		}
-	}
-	normalized := normalizeAbsPath(pth)
+	normalized := normalizeBase(pth)
+	debugLog("loading doc from: %s", normalized)
 
 	data, fromCache := r.cache.Get(normalized)
-	if !fromCache {
-		b, err := r.context.loadDoc(normalized)
-		if err != nil {
-			return nil, url.URL{}, false, fmt.Errorf("%s [%s]: %w", pth, normalized, err)
-		}
+	if fromCache {
+		return data, toFetch, fromCache, nil
+	}
 
-		var doc interface{}
-		if err := json.Unmarshal(b, &doc); err != nil {
-			return nil, url.URL{}, false, err
-		}
-		r.cache.Set(normalized, doc)
+	b, err := r.context.loadDoc(normalized)
+	if err != nil {
+		return nil, url.URL{}, false, err
+	}
 
-		return doc, toFetch, fromCache, nil
+	var doc interface{}
+	if err := json.Unmarshal(b, &doc); err != nil {
+		return nil, url.URL{}, false, err
 	}
+	r.cache.Set(normalized, doc)
 
-	return data, toFetch, fromCache, nil
+	return doc, toFetch, fromCache, nil
 }
 
 // isCircular detects cycles in sequences of $ref.
+//
 // It relies on a private context (which needs not be locked).
 func (r *schemaLoader) isCircular(ref *Ref, basePath string, parentRefs ...string) (foundCycle bool) {
-	normalizedRef := normalizePaths(ref.String(), basePath)
+	normalizedRef := normalizeURI(ref.String(), basePath)
 	if _, ok := r.context.circulars[normalizedRef]; ok {
 		// circular $ref has been already detected in another explored cycle
 		foundCycle = true
 		return
 	}
-	foundCycle = swag.ContainsStringsCI(parentRefs, normalizedRef) // TODO(fred): normalize windows url and remove CI equality
+	foundCycle = swag.ContainsStrings(parentRefs, normalizedRef) // normalized windows url's are lower cased
 	if foundCycle {
 		r.context.circulars[normalizedRef] = true
 	}
@@ -240,7 +235,7 @@ func (r *schemaLoader) deref(input interface{}, parentRefs []string, basePath st
 		return nil
 	}
 
-	normalizedRef := normalizeFileRef(ref, basePath)
+	normalizedRef := normalizeRef(ref, basePath)
 	normalizedBasePath := normalizedRef.RemoteURI()
 
 	if r.isCircular(normalizedRef, basePath, parentRefs...) {
@@ -279,7 +274,7 @@ func (r *schemaLoader) setSchemaID(target interface{}, id, basePath string) (str
 	// remember that basePath has to point to a file
 	var refPath string
 	if strings.HasSuffix(id, "/") {
-		// path.Clean here would not work correctly if there is a scheme (e.g. https://...)
+		// ensure this is detected as a file, not a folder
 		refPath = fmt.Sprintf("%s%s", id, "placeholder.json")
 	} else {
 		refPath = id
@@ -288,11 +283,18 @@ func (r *schemaLoader) setSchemaID(target interface{}, id, basePath string) (str
 	// updates the current base path
 	// * important: ID can be a relative path
 	// * registers target to be fetchable from the new base proposed by this id
-	newBasePath := normalizePaths(refPath, basePath)
+	newBasePath := normalizeURI(refPath, basePath)
 
 	// store found IDs for possible future reuse in $ref
 	r.cache.Set(newBasePath, target)
 
+	// the root document has an ID: all $ref relative to that ID may
+	// be rebased relative to the root document
+	if basePath == r.context.basePath {
+		debugLog("root document is a schema with ID: %s (normalized as:%s)", id, newBasePath)
+		r.context.rootID = newBasePath
+	}
+
 	return newBasePath, refPath
 }
 
@@ -306,6 +308,16 @@ func defaultSchemaLoader(
 		expandOptions = &ExpandOptions{}
 	}
 
+	cache = cacheOrDefault(cache)
+
+	if expandOptions.RelativeBase == "" {
+		// if no relative base is provided, assume the root document
+		// contains all $ref, or at least, that the relative documents
+		// may be resolved from the current working directory.
+		expandOptions.RelativeBase = baseForRoot(root, cache)
+	}
+	debugLog("effective expander options: %#v", expandOptions)
+
 	if context == nil {
 		context = newResolverContext(expandOptions)
 	}
@@ -313,7 +325,7 @@ func defaultSchemaLoader(
 	return &schemaLoader{
 		root:    root,
 		options: expandOptions,
-		cache:   cacheOrDefault(cache),
+		cache:   cache,
 		context: context,
 	}
 }
diff --git a/vendor/github.com/go-openapi/spec/security_scheme.go b/vendor/github.com/go-openapi/spec/security_scheme.go
index f7176ef6ae..9d0bdae908 100644
--- a/vendor/github.com/go-openapi/spec/security_scheme.go
+++ b/vendor/github.com/go-openapi/spec/security_scheme.go
@@ -125,8 +125,8 @@ func (s SecurityScheme) MarshalJSON() ([]byte, error) {
 		err error
 	)
 
-	if s.Type == oauth2 {
-		// when oauth2, empty AuthorizationURL is added as empty string
+	if s.Type == oauth2 && (s.Flow == "implicit" || s.Flow == "accessCode") {
+		// when oauth2 for implicit or accessCode flows, empty AuthorizationURL is added as empty string
 		b1, err = json.Marshal(s.SecuritySchemeProps)
 	} else {
 		// when not oauth2, empty AuthorizationURL should be omitted
diff --git a/vendor/github.com/go-openapi/spec/unused.go b/vendor/github.com/go-openapi/spec/unused.go
deleted file mode 100644
index aa12b56f6e..0000000000
--- a/vendor/github.com/go-openapi/spec/unused.go
+++ /dev/null
@@ -1,174 +0,0 @@
-// Copyright 2015 go-swagger maintainers
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package spec
-
-/*
-
-import (
-	"net/url"
-	"os"
-	"path"
-	"path/filepath"
-
-	"github.com/go-openapi/jsonpointer"
-)
-
-  // Some currently unused functions and definitions that
-  // used to be part of the expander.
-
-  // Moved here for the record and possible future reuse
-
-var (
-	idPtr, _  = jsonpointer.New("/id")
-	refPtr, _ = jsonpointer.New("/$ref")
-)
-
-func idFromNode(node interface{}) (*Ref, error) {
-	if idValue, _, err := idPtr.Get(node); err == nil {
-		if refStr, ok := idValue.(string); ok && refStr != "" {
-			idRef, err := NewRef(refStr)
-			if err != nil {
-				return nil, err
-			}
-			return &idRef, nil
-		}
-	}
-	return nil, nil
-}
-
-func nextRef(startingNode interface{}, startingRef *Ref, ptr *jsonpointer.Pointer) *Ref {
-	if startingRef == nil {
-		return nil
-	}
-
-	if ptr == nil {
-		return startingRef
-	}
-
-	ret := startingRef
-	var idRef *Ref
-	node := startingNode
-
-	for _, tok := range ptr.DecodedTokens() {
-		node, _, _ = jsonpointer.GetForToken(node, tok)
-		if node == nil {
-			break
-		}
-
-		idRef, _ = idFromNode(node)
-		if idRef != nil {
-			nw, err := ret.Inherits(*idRef)
-			if err != nil {
-				break
-			}
-			ret = nw
-		}
-
-		refRef, _, _ := refPtr.Get(node)
-		if refRef != nil {
-			var rf Ref
-			switch value := refRef.(type) {
-			case string:
-				rf, _ = NewRef(value)
-			}
-			nw, err := ret.Inherits(rf)
-			if err != nil {
-				break
-			}
-			nwURL := nw.GetURL()
-			if nwURL.Scheme == "file" || (nwURL.Scheme == "" && nwURL.Host == "") {
-				nwpt := filepath.ToSlash(nwURL.Path)
-				if filepath.IsAbs(nwpt) {
-					_, err := os.Stat(nwpt)
-					if err != nil {
-						nwURL.Path = filepath.Join(".", nwpt)
-					}
-				}
-			}
-
-			ret = nw
-		}
-
-	}
-
-	return ret
-}
-
-// basePathFromSchemaID returns a new basePath based on an existing basePath and a schema ID
-func basePathFromSchemaID(oldBasePath, id string) string {
-	u, err := url.Parse(oldBasePath)
-	if err != nil {
-		panic(err)
-	}
-	uid, err := url.Parse(id)
-	if err != nil {
-		panic(err)
-	}
-
-	if path.IsAbs(uid.Path) {
-		return id
-	}
-	u.Path = path.Join(path.Dir(u.Path), uid.Path)
-	return u.String()
-}
-*/
-
-// type ExtraSchemaProps map[string]interface{}
-
-// // JSONSchema represents a structure that is a json schema draft 04
-// type JSONSchema struct {
-// 	SchemaProps
-// 	ExtraSchemaProps
-// }
-
-// // MarshalJSON marshal this to JSON
-// func (s JSONSchema) MarshalJSON() ([]byte, error) {
-// 	b1, err := json.Marshal(s.SchemaProps)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	b2, err := s.Ref.MarshalJSON()
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	b3, err := s.Schema.MarshalJSON()
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	b4, err := json.Marshal(s.ExtraSchemaProps)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	return swag.ConcatJSON(b1, b2, b3, b4), nil
-// }
-
-// // UnmarshalJSON marshal this from JSON
-// func (s *JSONSchema) UnmarshalJSON(data []byte) error {
-// 	var sch JSONSchema
-// 	if err := json.Unmarshal(data, &sch.SchemaProps); err != nil {
-// 		return err
-// 	}
-// 	if err := json.Unmarshal(data, &sch.Ref); err != nil {
-// 		return err
-// 	}
-// 	if err := json.Unmarshal(data, &sch.Schema); err != nil {
-// 		return err
-// 	}
-// 	if err := json.Unmarshal(data, &sch.ExtraSchemaProps); err != nil {
-// 		return err
-// 	}
-// 	*s = sch
-// 	return nil
-// }